Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/80605
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Type: | Journal article |
Title: | Multiple line arrays for the characterization of aeroacoustic sources using a time-reversal method |
Author: | Mimani, A. Doolan, C. Medwell, P. |
Citation: | Journal of the Acoustical Society of America, 2013; 134(4):327-333 |
Publisher: | Acoustical Soc Amer Amer Inst Physics |
Issue Date: | 2013 |
ISSN: | 0001-4966 1520-8524 |
Department: | Faculty of Engineering, Computer & Mathematical Sciences |
Statement of Responsibility: | A. Mimani, C. J. Doolan, and P. R. Medwell |
Abstract: | This letter investigates the use of multiple line arrays (LAs) in a Time-Reversal Mirror for localizing and characterizing multipole aeroacoustic sources in a uniform subsonic mean flow using a numerical Time-Reversal (TR) method. Regardless of the original source characteristics, accuracy of predicting the source location can be significantly improved using at least two LAs. Furthermore, it is impossible to determine the source characteristics using a single LA, rather a minimum of two are required to establish either the monopole or dipole source nature, while four LAs (fully surrounding the source) are required for characterizing a lateral quadrupole source. |
Keywords: | Equipment Design Sound Spectrography Transducers Wind Noise Algorithms Acoustics Motion Pressure Time Factors Computer Simulation Numerical Analysis, Computer-Assisted Signal Processing, Computer-Assisted |
Rights: | © 2013 Acoustical Society of America |
DOI: | 10.1121/1.4819185 |
Grant ID: | http://purl.org/au-research/grants/arc/DP120102134 |
Published version: | http://scitation.aip.org/content/asa/journal/jasa/134/4/10.1121/1.4819185 |
Appears in Collections: | Aurora harvest 4 Mechanical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_80605.pdf | Published version | 4.11 MB | Adobe PDF | View/Open |
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